FRANKLIN, Tenn. — Republicans Marco Rubio and Ted Cruz battled to emerge as the true Trump foe on Sunday while the billionaire businessman took a brief break from his braggadocio to say his drive for the GOP nomination isn’t unstoppable — yet.

Fresh off a commanding victory in South Carolina, Donald Trump declined to say the nomination was his to lose. But he quickly went on to declare, “I’m really on my way.” Soon enough, in a television interview, he was toting up the electoral math all the way through Election Day and concluding, “I’m going to win.”

The candidates’ diverging flight plans demonstrated how the campaign spreads out and speeds up now. Nevada’s GOP caucuses are Tuesday, and then a dozen states vote in the March 1 Super Tuesday bonanza.

Cruz headed for Nevada and Trump for Georgia. Rubio embarked on a Tennessee-Arkansas-Nevada trifecta.

On the Democratic side, Hillary Clinton savored her weekend win in the Nevada caucuses as Bernie Sanders acknowledged that while his insurgent campaign has made strides, “at the end of the day ... you need delegates.” He looked past Saturday’s Democratic primary in South Carolina to list Colorado, Minnesota, Massachusetts and Oklahoma as places where he has a “good shot” to do well.

Rubio and Cruz used the Sunday morning talk shows to spin rosy scenarios after returns in South Carolina put Trump way on top, with Rubio squeaking past Cruz for second. But with roughly 70 percent of Republicans in national polls declining to back Trump, Cruz and Rubio tried to cast themselves as the one candidate around whom what Rubio calls the “alternative-to-Donald-Trump vote” can coalesce.

Rubio also took an aggressive run at Trump, faulting him for a lack of specifics on policy.

“If you’re running for president of the United States, you can’t just tell people you’re going to make America great again,” he said on CBS’ “Face the Nation.”

Cruz, for his part, stressed his conservative bona fides and said he was the lone “strong conservative in this race who can win. We see conservatives continuing to unite behind our campaign,” he told NBC’s “Meet the Press.”

Rubio also suggested it was only a matter of time before John Kasich and Ben Carson folded like Jeb Bush did on Saturday. “The sooner we can coalesce, the better we’re going to be as a party in general,” Rubio said.